Microtest 8761K Cable Tester (512-Point, 4-Wire Kelvin)

The Microtest 8761K Cable Tester provides 512-point connectivity and insulation testing with 4-wire Kelvin resistance measurement from 1 mΩ to 52 Ω for precision cable and wire harness verification. Kelvin (4-wire) measurement eliminates contact resistance and lead resistance errors, delivering true conductor resistance readings essential for low-resistance harness testing in automotive, aerospace, and medical device applications where milliohm-level resistance specifications must be verified.

Specifications

Feature	Specification
Test Points	512
Measurement Method	4-wire Kelvin
Resistance Range	1 mΩ to 52 Ω
AC Withstand	700 VAC
DC Withstand	1000 VDC
Test Files	500 programmable recipes
Self-Learn	Automatic test file from golden sample
Recipe Selection	Barcode-driven
Interface	USB, handler, barcode reader
Sorting	Pass/fail with disposition output

4-Wire Kelvin Measurement Advantage

The Kelvin (4-wire) technique uses separate force and sense connections at each measurement point, eliminating fixture contact resistance and cable resistance from the measurement path. This is critical for low-resistance harness verification where contact resistance at worn fixture probes (typically 10-50 mΩ) can exceed the resistance of the conductor itself. The 8761K maintains milliohm-level accuracy regardless of fixture contact condition, ensuring reliable go/no-go decisions over thousands of test cycles.

Integrated Hipot and Production Features

Integrated hipot testing at 700 VAC and 1000 VDC verifies insulation integrity between conductors without moving the harness to a separate safety tester. With 500 programmable test files, the 8761K stores recipes for different harness configurations and supports barcode-driven recipe selection for mixed-model production lines. The 512-point capacity covers complex harness assemblies with high pin-count connectors, and the self-learn function automatically generates test files from a known-good reference sample.

Applications

The 8761K targets automotive harness manufacturers, aerospace cable assembly houses, medical device cable producers, and any application where low-resistance measurement accuracy is mandated by the end-customer specification. Indian harness manufacturers serving global OEMs benefit from the 4-wire Kelvin accuracy that export quality requirements demand.

Watch the Microtest 8761K Cable Tester (512-Point, 4-Wire Kelvin) on YouTube

GSAS Micro Systems delivers the Microtest 8761K to wire harness manufacturers and cable assembly production facilities across India with INR invoicing and application support. Engineering teams in Bengaluru, Hyderabad, Chennai, Pune, Mumbai, and Delhi NCR provide local demonstration, fixture design consultation, and after-sales service.